Writing instrument



FIG. 1 is a front elevational view of a writing instrument showing mynew design;

FIG. 2 is a right side elevational view;

FIG. 3 is a bottom plan view with the cap member removed for convenienceof illustration;

FIG. 4 is a top plan view;

FIG. 5 is a rear elevational view;

FIG. 6 is a front elevational view in an exploded condition; and,

FIG. 7 is a front elevational view thereof with the cap member in astored position.

The ornamental design for a writing instrument, as shown and described. 